My best two female breeders so far are a beige hooded and a chocolate/white husky. Both regularily produce 15+ big healthy pinks with no losses at birth or thereafter but are nice friendly females that have never bitten. My male is a black hooded and has been a spectacular breeder....never mean with his females, very easy to handle for a large male (course he has a pretty good deal....all the food he can eat, willing female rats cycling in and out of his main cage and only one job in life LOL)